Talk:Resilience (materials science)

What does resilience mean in the context of distributed computing?

Resilience is a general property of systems - makes sense to keep a united page and then a link to field specific definitions. Currently all but ecology def'n are weak.

I removed it from the beginning of the chapter about Ecology, becouse it doesn't make sense to me... but as non-English speaker I am may be wrong... consider this change.

Network Resilience
Why is network resiliance being redirected to an external URL?

The external URL in question is to the wiki of an international research initiative on network resilience, which contains far more information relevant to this topic than can be placed on this page. Justin P. Rohrer 14:23, 19 December 2006 (UTC)

Resilience is a term used in both technology and with nature. i.e. Resilent computer network/software systems. Howver so do humans and nature show resilience on how they react to life's overwhemling situations and over come them.

So I highly recommend splitting off this topic into two main streams: Technology Biological ~ nature and humans

Great to see the topic grow here.

Michael Ballard www.ResiliencyforLife.com

Copyvio
I've removed the "Resiliency applied to the critical infrastructure" section (three, Jan 14 edits by Don O'Neill), because it appears to be a copyright violation of this material. --Ronz 16:39, 21 January 2007 (UTC)

Disambiguation
I agree with whoever put up the request to make a disambiguation page and split off the sections. --Selket Talk 06:14, 5 February 2007 (UTC) I disagree - resilience is a term that is used very loosely, and if the one page has the various types of resilience/ fields that the term is used in, it is easier to determine exactly how to use the term for the purpose you want, —Preceding unsigned comment added by 203.202.70.205 (talk) 23:32, 17 October 2007 (UTC)
 * I also agree to this suggestion.--DorisH 21:18, 13 March 2007 (UTC)
 * I agree, too. --67.170.239.115 02:07, 5 June 2007 (UTC)

The Resiliance Modulus section of this page deserves its own seperate page under continuum mechanics as it is an important scientific term that really has no other meaning than for the specific purpose of material testing. —Preceding unsigned comment added by Ryangel (talk • contribs) 05:38, 17 December 2007 (UTC)

I agree with the request to seperate the resilience into different sections. In partcilar to technology more categories should be included

Resilient Networks

Resilient Actors

Resilient Objects

All this like to Resilient Distributed Computing. Possibly links from CORBA or OMG to this specific articles can be a good addition. I appreciate

--Engineer Bainomugisha (talk) 10:27, 18 February 2008 (UTC)


 * As of now, I'm splitting the page. I'm leaving the material science section here and moving other items to their own page. All can be found on the new Resilience (disambiguation) page, linked from all, which will address the concern raised by the anon IP above. --AndrewHowse (talk) 16:20, 14 March 2008 (UTC)


 * I think that the main page should be the disamb page and this page should go to one for material science. I am making the changes now. --Sirsurvivealot (talk) 19:59, 18 February 2015 (UTC)

Resilience and Temperature
It's well know that resilience can change a lot depending on the materials temperature, how adding something about this? —Preceding unsigned comment added by 85.18.50.180 (talk) 21:18, 12 April 2011 (UTC) The temperature is fantastic here in Alberta Canada! Not!! global warming..

Material resilience, something out of place.
In the section of "Material Resilience" there is a section "Other uses of resilience" which is more appropriate for a different section. Consider moving it. — Preceding unsigned comment added by Pphilbey (talk • contribs) 12:43, 16 August 2012 (UTC)

Disambiguation
I suggest to put the disambiguation page her (resilience), rather than the quite specific material-related resilience article. 92.225.187.221 (talk) 10:51, 7 July 2013 (UTC)
 * Agreed doing it now. --Sirsurvivealot (talk) 20:00, 18 February 2015 (UTC)

Resilience vs toughness
"It has been suggested that this article be merged with Toughness. (Discuss) Proposed since July 2015."

I can't find the discussion page that discusses the July 2015 proposal to merge the Resilience (materials science) page with the toughness page. I thought it would be here. I oppose the proposal. Here's why. The resilience of a material is distinct from and not the same as the toughness of a material. Resilience is a measure of the energy absorbed, stored and released during elastic deformation. By contrast, toughness is a measure of the energy absorbed and stored (some of which may be released as thermal energy aka 'heat') during plastic deformation. The definitions of resilience and of toughness here on Wikipedia on their respective Wikipedia pages should suffice to make this clear, thus:

In material science, resilience is the ability of a material to absorb energy when it is deformed elastically, and release that energy upon unloading. Proof resilience is defined as the maximum energy that can be absorbed within the elastic limit, without creating a permanent distortion. The modulus of resilience is defined as the maximum energy that can be absorbed per unit volume without creating a permanent distortion. It can be calculated by integrating the stress-strain curve from zero to the elastic limit. In uniaxial tension,


 * $$ U_{r}= \frac{\sigma_{y}^2}{2E}$$

where U r  is the modulus of resilience, σ y  is the yield strength, and E is the [[Young's modulus

By contrast:

In materials science and metallurgy, toughness is the ability of a material to absorb energy and plastically deform without fracturing.[1] One definition of material toughness is the amount of energy per unit volume that a material can absorb before rupturing. It is also defined as a material's resistance to fracture when stressed.

Toughness can be determined by integrating the stress-strain curve.[1] It is the energy of mechanical deformation per unit volume prior to fracture. The explicit mathematical description is:


 * $$ \tfrac{\mbox{energy}}{\mbox{volume}} = \int_{0}^{\epsilon_f} \sigma\, d\epsilon $$

where
 * $$ \epsilon_{} $$ is strain
 * $$ \epsilon_f $$ is the strain upon failure
 * $$ \sigma $$ is stress

Another definition is the ability to absorb mechanical energy up to the point of failure. The area under the stress-strain curve is called toughness.

If the upper limit of integration up to the yield point is restricted, the energy absorbed per unit volume is known as the modulus of resilience. Mathematically, the modulus of resilience can be expressed by the product of the square of the yield stress divided by two times the Young's modulus of elasticity. That is,
 * Modulus of resilience = $Yield stress^{2}⁄2 (Young's modulus)$

58.165.105.140 (talk) 04:58, 24 October 2015 (UTC)
 * Closing, given the opposition and lack of support. Klbrain (talk) 16:53, 25 October 2017 (UTC)